package com.macower.businessdata.util;

import java.net.URLEncoder;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang.StringUtils;
import com.sun.xml.internal.messaging.saaj.packaging.mime.internet.MimeUtility;

public class EncodeUtil {


	public static String encodeFilename(String filename,
			HttpServletRequest request) {
		/**
		 * 获取客户端浏览器和操作系统信息 在IE浏览器中得到的是：User-Agent=Mozilla/4.0 (compatible; MSIE
		 * 6.0; Windows NT 5.1; SV1; Maxthon; Alexa Toolbar)
		 * 在Firefox中得到的是：User-Agent=Mozilla/5.0 (Windows; U; Windows NT 5.1;
		 * zh-CN; rv:1.7.10) Gecko/20050717 Firefox/1.0.6
		 */
		String agent = request.getHeader("USER-AGENT");
		try {
			if ((agent != null) && (-1 != agent.indexOf("MSIE"))) {
				String newFileName = URLEncoder.encode(filename, "UTF-8");
				newFileName = StringUtils.replace(newFileName, "+", "%20");
				if (newFileName.length() > 150) {
					newFileName = new String(filename.getBytes("GB2312"),
							"ISO8859-1");
					newFileName = StringUtils.replace(newFileName, " ", "%20");
				}
				return newFileName;
			}
			if ((agent != null) && (-1 != agent.indexOf("Mozilla"))) {
				return MimeUtility.encodeText(filename, "UTF-8", "B");
			}
			return filename;
		} catch (Exception ex) {
			return filename;
		}
	}

}
